Ⅰ. 单句语法填空
1. It is vital that you (should) wear (wear) a mask to prevent haze when going out.
2. He has the potential to become (become) a chemist.
3. To my astonishment, everyone looked astonished when I announced the astonishing news except Tom, who remained very calm. (astonish)
4. Some owners wish they could try out the car in a race track to observe its performance.
5. The technology, in my opinion, could have applications(apply)in such fields as military, medicine and public safety.
6. One of the most effective(effect)ways to reduce stress is to talk about feelings with someone you trust.
7. She desperately wanted to win her father’s approval (approve).
8. There is a great deal of evidence indicating(indicate) that music activities engage different parts of the brain.
9. Not only regular exercise but also good amounts of sleep every night are(be)important for your health.
10. If there were (be) no air or water, there would be no living things on the earth.
